Franck Ribery has said that there are already signs that Pep Guardiola's arrival has improved Bayern Munich.

The winger is encouraged by the impact the ex Barcelona coach has had after the club won the treble last year.

"Last season we won everything and if we didn't make any changes, our opponents would be more able to adapt to us. The new system makes our game even harder to second-guess," Ribery told Bundesliga.com.

"We can change tactics mid-match or switch a few players around to give the opposition even more trouble."